code: def test_factorize_reproduce(two_tensor):
      r"""Test that factors returned by the factorize function reproduce the two-electron tensor."""
      factors, _, _ = qml.qchem.factorize(two_tensor, 1e-5, 1e-5)
      two_computed = np.zeros(two_tensor.shape)
      for mat in factors:
          two_computed += np.einsum("ij, lk", mat, mat)
  
      assert np.allclose(two_computed, two_tensor)
  
file_path: pennylane/tests/qchem/test_factorization.py
imports: import pytest
  import pennylane
  from pennylane import numpy
label_desc: Use image node_id 2 for calling a global function with example usage: test_factorize_reproduce(two_tensor) without return types